JPH07324599A - Tunnel ventilation control device - Google Patents

Abstract

PURPOSE:To allow the intra-tunnel ventilating facility to exert its ability fully at all times wherever the V1 meter (haze/transmission factor meter) in failure is located. CONSTITUTION:Measuring signals from tunnel ventilation faicilities 181-18n installed at cetrain intervals in a tunnel are sent to a measuring control means 12 in a ventilation computation processing device 11 via sub-stations 171-17n and a master station 16. On the basis of the given signals, the means 12 performs control of a dust collector, jet fan, etc., in the facilities 181-18n. If any VI meter goes in failure under this control, a failure sensing means 13 senses it, and the measuring control by the means 13 is stopped. A program control means 15 performs program control according to the given conditions including the location of VI meter installation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel ventilation control device for controlling using signals from a plurality of fume transmittance systems (VI meters) provided in a tunnel.

[0002]

2. Description of the Related Art FIG. 4 is a plan view showing the arrangement of ventilation equipment in a so-called vertical flow tunnel. In FIG. 4, dust collectors 3 are installed at predetermined intervals beside the road 2 on which the automobile 1 travels, and a VI meter 4 is installed near each dust collector 3. The air in the tunnel passes through the dust collector 3 as indicated by the arrow, so that the dust is removed at this time.

FIG. 5 is an enlarged view of a part of FIG. The dust collector 3 is composed of a dust collector 5 that removes dust in the air by the action of static electricity, and a fan 6 that sucks and exhausts air. The fan 6 has a blade angle controllable, whereby the air volume can be adjusted.

The VI meter 4 is for detecting the concentration of pollution in the tunnel due to the exhaust gas of an automobile, that is, the degree of deterioration of the field of view, and is composed of a light projector 7 and a light receiver 8.

Although not shown in FIG. 4, jet fans for creating a flow of air from the entrance side to the exit side of the tunnel are installed at predetermined intervals on the ceiling portion facing the inside of the road 2. There is. A ventilation calculation processing device (not shown) also inputs a measurement signal from the VI meter 4 to control the number of jet fans to be operated or to collect dust according to the degree of pollution concentration in the tunnel. Measurement control is performed to control the blade angle of the fan 6 in the fan 3.

By the way, the VI meter 4 installed facing the road 2 in the tunnel may fail due to a contact accident with the automobile 1 or other causes. In such a case, the ventilation calculation processing device inputs the measurement signal from another normal VI meter 4 and continues the measurement control based on this.

[0007]

However, when the measurement control is continued as described above, there is a great difference in control reliability depending on where the failed VI meter 4 is installed. Become.

For example, V which is closest to the exit side in the tunnel
If the I meter 4 fails, the ventilation calculation processing device continues the measurement control based on the measurement signal from another normal VI meter 4.

However, the vicinity of the exit of the tunnel is the place where the pollution concentration is the highest and the visibility is apt to be poor, and the measured value of another normal VI meter 4 is more than the value corresponding to the actual pollution concentration near the exit of the tunnel. Will also show a small value. Therefore, in such a way of continuing the measurement control, there is a possibility that the ventilation capacity is insufficient and it is not possible to sufficiently secure the visibility near the tunnel exit side.

The present invention has been made in view of the above circumstances, and it is possible to always exhibit a sufficient ventilation capacity regardless of where the failed VI meter is installed. It is intended to provide a tunnel ventilation control device.

[0011]

As means for solving the above-mentioned problems, the invention according to claim 1 relates to tunnel ventilation equipment based on measurement signals from a plurality of haze transmittance meters provided in a tunnel. In a tunnel ventilation control device equipped with measurement control means for performing measurement control, when failure detection means for detecting a failure of any of the plurality of haze transmittance meters and a detection signal from the failure detection means are input. In addition, the tunnel ventilation equipment is provided with program control means for performing program control based on preprogrammed contents, instead of the measurement control by the measurement control means.

According to the second aspect of the present invention, there is provided a tunnel ventilation control device including measurement control means for performing measurement control for tunnel ventilation equipment based on measurement signals from a plurality of haze transmittance meters provided in a tunnel. Failure detection means for detecting a failure of any of the plurality of haze transmittance meters, and a target value changing means for changing the control target value for the measurement control when the failure detection means detects a failure, The measurement control means is for continuing the measurement control based on a measurement signal from another normal haze transmittance meter after any of the plurality of haze transmittance meters has failed. It is characterized by.

According to a third aspect of the present invention, there is provided a tunnel ventilation control device including measurement control means for performing measurement control for tunnel ventilation equipment based on measurement signals from a plurality of haze transmittance meters provided in the tunnel. Failure detection means for detecting a failure of any of the plurality of fume transmittance meters, and in the case where the failure detection means detects a failure, the tunnel ventilation equipment is replaced by the measurement control by the measurement control means. And a fixed operation control means for performing a fixed operation.

[0014]

According to the first aspect of the present invention, the failure detecting means detects which of the plurality of fume transmittance meters has failed and outputs a detection signal. As a result, the measurement control that has been performed up to that point is stopped.

Then, the program control means performs program control on the tunnel ventilation equipment based on the contents programmed in advance. This program has different contents depending on various conditions such as the place where the failed haze transmittance meter was installed, and the number of the failed haze transmittance meter. Therefore, even if the haze transmittance meter fails, sufficient ventilation capacity can always be exerted.

According to the second aspect of the present invention, even if any of the haze transmittance meters fails, the measurement control is continued using another normal haze transmittance meter. However, if the faulty haze transmittance meter was installed in the worst environment, ventilation performance may be insufficient if measurement control is continued. Therefore, the target value changing means changes the control target value when performing the measurement control.

According to the third aspect of the present invention, when any of the haze transmittance meters fails, the fixed operation control means performs the fixed operation without performing the measurement control. In this case, control is not performed according to the degree of environmental deterioration, but it is possible to secure a ventilation capacity above a certain level.

[0018]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows an embodiment of the invention described in claim 1.

In FIG. 1, a ventilation arithmetic processing unit 11 having a measurement control means 12 and a failure detection means 13 is connected to a transmission line 10, and a program control means 15 is also provided.
Is connected to the man-machine interface device 14.

A master station 16 is connected to the transmission line 10. The master station 16 has n slave stations 17 _{1 to} 17 _n.
It is possible to send and receive to and from. Slave stations 17 _{1 to} 17
Tunnel ventilation equipments 18 ₁ to 18 _n are connected to _n , respectively.

The tunnel ventilation facilities 18 ₁ to 18 _n are shown in FIG.
Further, the dust collector 3 and the VI meter 4 and the jet fan described in FIG. 5, or these control devices (not shown) are in contact.

Next, the operation of this embodiment thus constructed will be described. Now, tunnel ventilation equipment 18 ₁ to 18 _n
Assuming that all of the VI meters 4 are normal, their measurement signals are sent to the measurement control means 12 in the ventilation calculation processing device 11 via the slave stations 17 _{1 to} 17 _n and the master station 16.

When the measurement control means 12 receives these measurement signals, it outputs a control signal corresponding to each measurement value. These control signals are sent to the tunnel ventilation equipment 18 ₁ to 18 _n via the master station 16 and the slave stations 17 _{1 to} 17 _n .

While such measurement control is being performed, any V in the tunnel ventilation equipment 18 ₁ to 18 _n
Suppose that I total 4 breaks down. Then, the failure detection means 13 detects this failure, notifies the measurement control means 12 of the occurrence of the failure, and at the same time, the program control means 1 determines which of the tunnel ventilation equipment of 18 ₁ to 18 _n has failed.
Notify 5.

As a result, the measurement control by the measurement control means 12 is stopped, and the program control by the program control means 15 is started. The program control means 15 stores a program optimally set according to various conditions such as which VI meter has failed, how many VI meters have failed, and tunnel ventilation based on this program. Program control of equipment. Therefore, according to this program control, it is possible to prevent a situation in which the visibility required for safety cannot be obtained due to insufficient ventilation capacity in the tunnel.

The program control by the program control means 15 may be automatically started based on the notification from the failure detection means 13, or
The operator may manually start the display screen of the man-machine interface device 14 or an alarm device.

FIG. 2 shows an embodiment of the invention described in claim 2. 2 is different from FIG. 1 in that the ventilation calculation processing device 11A is used.
Has the target value changing means 19, and the man-machine interface device 14A has no program controlling means.

If any of the VI meters 4 in the tunnel ventilation equipment 18 ₁ to 18 _n fails during the measurement control in this embodiment, the failure detecting means 13 controls the occurrence of this failure. Means 12 and target value changing means 19
Let us know.

The target value changing means 19 stores the measurement control target values set according to various targets such as which VI meter has failed and how many VI meters have failed. Select the optimum value from the target values. And
The target value changing means 19 replaces the selected new target value with the target value used by the measurement control means 12 until then.

The measurement control means 12 continues the measurement control based on this new target value. For example, if the failed VI meter is in the tunnel ventilation equipment 18 _n closest to the tunnel exit, the measurement control means 12 controls the (n-1) units of the tunnel ventilation equipment 18 ₁ to 18 _n-1 . Using the measurement values from the VI meter (for example, using the average value of these values), measurement control is performed on all the tunnel ventilation equipments 18 ₁ to 18 _n . However, since the average value of the measured values from the (n-1) VI meters is much smaller than the actual value at the location of the tunnel ventilation equipment 18 _n ,
If the control is performed as it is, the ventilation capacity may be insufficient. Therefore, in such a case, the target value changing means 1
9 changes the target value of measurement control to a higher value.

FIG. 3 shows an embodiment of the invention described in claim 3. 3 is different from FIG. 2 in that the ventilation calculation processing device 11B is used.
However, a fixed operation control means 20 is provided instead of the target value changing means 19 in FIG.

In this embodiment, when the failure detection means 13 detects a failure of any of the VI meters, the fixed operation control means 20 replaces the measurement control means 12 and operates in a pattern fixed to a specific state. To do.

For example, assuming that the pollution concentration in the tunnel is the worst, all the jet fans are rotated, and the blade angle of the fan 6 in the dust collector 3 is adjusted to maximize the air volume. According to such fixed operation, detailed control according to the degree of environmental deterioration in the tunnel will not be performed, but insufficient ventilation capacity in the tunnel will be surely prevented, and the field of view necessary for the driver to be safe. Can be secured.

[0034]

As described above, according to the present invention, when any one of the haze transmittance meters fails, the control is executed according to the degree of the influence of the failure, so that it is always sufficient. Ventilation capacity can be demonstrated and the necessary visibility in the tunnel can be secured.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the invention described in claim 1.

FIG. 2 is a block diagram showing an embodiment of the invention according to claim 2;

FIG. 3 is a block diagram showing an embodiment of the invention according to claim 3;

FIG. 4 is a plan view showing an arrangement state of ventilation equipment in a tunnel.

FIG. 5 is an enlarged view of a part of FIG.

[Explanation of symbols]

3 Dust collector 4 VI meter (fume transmittance meter) 11 Ventilation calculation processing device 12 Measurement control means 13 Failure detection means 15 Program control means 18 ₁ to 18 _n Tunnel ventilation equipment 19 Target value change means 20 Fixed operation control means

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G05B 19/02 C

Claims (3)

[Claims] 1. A tunnel ventilation control device comprising measurement control means for performing measurement control of tunnel ventilation equipment based on measurement signals from a plurality of fume transmittance meters provided in a tunnel. Failure detection means for detecting a failure of any of the total, and when the detection signal from the failure detection means is input, the tunnel ventilation equipment, instead of the measurement control by the measurement control means, a program in advance. A tunnel ventilation control device comprising: a program control means for performing a program control based on the contents described above. 2. A tunnel ventilation control device comprising measurement control means for performing measurement control for tunnel ventilation equipment based on measurement signals from a plurality of fume transmittance meters provided in a tunnel. Failure detection means for detecting a failure of any of the total, and a target value changing means for changing a control target value for the measurement control when the failure detection means detects a failure, A tunnel, characterized in that the control means continues the measurement control based on a measurement signal from another normal haze transmittance meter after any one of the plurality of haze transmittance meters fails. Ventilation control device. 3. A tunnel ventilation control device comprising measurement control means for performing measurement control for tunnel ventilation equipment based on measurement signals from a plurality of fume transmittance meters provided in a tunnel, wherein the plurality of fume transmittances are provided. Failure detection means for detecting a failure of any one of the meters, and when the failure detection means detects a failure, fixed operation is performed on the tunnel ventilation equipment instead of the measurement control by the measurement control means. A tunnel ventilation control device comprising: a fixed operation control means;